kviri: Someone needs to write a movie in which a colony of bacterial life forms have their peaceful existence on Asteroid 2997B9 threatened by this HUGE BLUE PLANET that is now hurtling towards it.z_gryphon: coming next year from Pixar!

I think I've seen this one. The only way they can save themselves is to crack their homeworld apart with an H-bomb before it's too late.

Unfortunately it doesn't work, and they're all killed except for this one guy who survives the impact. In a surprise twist ending, he goes on to discover that the bodies of the inhabitants of the blue planet are perfectly suited to founding new colonies.